How do we look for life beyond Earth? And how did it first get started down here? To help us take on these big questions, we explore the science of SETI and the chemistry of creating life. Plus, science gets cinematic as we meet the scientific adviser for Prometheus, and find out how his work could help us understand alien atmospheres. In the news, how to sequence a baby using just the mother's blood, and the simple intervention that could prevent millions of malaria cases. In Question of the Week, can we create life in the lab from just elements and heat?